The International Association of Institutes of Navigation (IAIN) was represented by the Secretary-General (M. W. Richey) at the eighteenth session of Imco's Sub-Committee on Safety of Navigation from 22–26 March, under the Chairmanship of Captain W. S. G. Morrison (Canada), and the thirty-fourth session of the Maritime Safety Committee (MSC) from 3–7 May, under the Chairmanship of Dr. L. Spinelli (Italy).

In accordance with the recommendations of the Sub-Committee on Safety of Navigation the MSC approved:

1. Amendments to the traffic separation scheme and deep-water route in the Sandettiearea.

2. An amended traffic separation scheme off the Casquets.

3. A traffic separation scheme in the Gulf of Suez.

4. Amendments to the separation schemes off Delaware Bay and the approaches to New York.